Telescope-sight for firearms.



PATENTED NOV. 5, 1907.

T. G. JOHNSON. TELESCOPE SIGHT FOR FIREARMS.

APPLICATION FILED JULY 1, 1907- 2 SHEBTSSHEBT 1.

BATEN-TBD NOV. 5, 1901.

T. G. JOHNSON. TELESCOPE SIGHT FOR FIREARMS.

AYILIUATION I'ILED JULY 1, 1907.

'2 SHEETS'SHBET 2;

which it is separated by a centering bevel 29 which 00- acts inaccurately centering the shoe with a conical .35 the beveled lower endof which its over the upper .iurnished with gradnations which are notshown.

the rear mounting the foot 23 isi u-1ned at its right hand whereby thescrew is held in place.

the bearing face 16 on the inside 01" the ring 3, the same is laterallycutaway it?) at 18 for clearance.

At its rear end the telescope is cradled; as it were, in a cradle-spring19 formed at its inner end with two coils 20 and terminating in twoinwardly inclined rearwardly pitched retaining-ends 21 which areinserted into a pair of correspondingly inclined holes 22 formed in adovetail rib 23 made integral with and forming a foot for the ring orhand 24 of the rear mounting of the telescope.

At its upper end the ring 24 is formed with s crescont-shaped recess 25or the reception cl 2. yoke-like shoe 26 having its bearing face 27COXIVBXGd from front to rear and concaved from end to end, the telescopebeing pressed upward at its rear end against the said lace 27 by thecradle-spring 19 aforesaid. The said shoe 26 is located at the lower endof a. stem 28 from seat 30 formed at the lower end of a micrometerscrew- 31 charnbered'for the reception of the stem 28. The saidmicrometer screw 31 is mounted in an internally threaded hub 32 formedintegrul with the-upper end of the ring 24', this hulnns well as theadjacent portion of the ring, being slotted as at 33 for the purpose ofbeing drawn together by e clamping screw 3 so as to tighten thescrewill. as required, and take up wear. At its upper end the screw 31carries a knurled thimble end of the hub 32, the said thimble and hubbeing The bearing face 27 of the shoe 26 provides by virtue of itspeculiar form described, a line bearing which shifts according to theadjustment of the telescope, while the entire shoe turns upon a verticalaxis of the stem 28 to accommodate deflections of the rear end of thetelescope to the right or left.

The dovetail rib or foot 23 aforesaid, is arranged laterslly'withrespect to the ring 24 end enters a transvcrse dovetail groove 36 in theupper face of a base 37 formed in its lower face with a dovetail groove38 adapting the base to be slipped over a dovetail fastening block 39having screw holes 39 and fixed to the top of the barrel by screws 40one of which is shown in Fig. 3. The said base 37 is provided with uthumbscrew 41 having its end pointed for entrance into a positioningnotch 42 located in the left hm'id side of the block 39 so that in caseof the removal of the mount from the gun, it may be replaced thereuponin the av act position which it had thereon before it was talccn oil. Inorder to provide for the lateral adjustment of end with a collar 13 toreceive the inner end of a micrometer screw 4-1. the said inner end ofwhich bus n groove 45 receiving 1 pin 46 mounted in the collar-l3.

At its outer end l the screw is provided with it knurled. beveled and lgraduated thimble 47 which fits over and turns upon the outer edge oithe said collar 423 which furnished with a mark 43 for reading with thegruduntions cu the said sleeve. The inner end of the screw ll enters aninternally threaded sleeve 4 S arranged transversely with respect to thebase .97 and rising within the ccnler of the dovetail groove in theupper lace. thereof. At its right hand side the sleeve -tl5 is cut awayto form a. clear-- a'nce space 49 {or the reception oi the collar 43ngorasaid The micrometer construction just now des. .bcd provides forthe lateral or wind-ego adjustment or" the rear mounting.

In order to take up any slocs or wear. and to assist in maintaining themounting without deviation in any of the positions in which it may beset, i form H shallow oblong recess 50 in the host bevel ol' the loot 23and in this recess locate a longitudinally bowed spring 51 the crowningcentral portion of which engages with the front wall of the dovetaillit; in the top oi the base 37.

I do not in this cuntmake any claim to the lormation of a longitudinalgroove in the center of the lower face of the telescope for thereception oi the nose of the spring actuated plunger as that will formthe subject matter of another application to be filed ol' even dateherewith by Frank F. Burton.

1. The combination with n telescope. 01' a mounting therefor having :1ilXEd bearing surface convcxcd from front to rear and concnvcd from endto end.

2. The coml'llnation with n l escopc. m; a front and a rear mountingthercfor, the s. from mounting: being provided with n ilKLtl benriugsurface converted om flulll to rear and concaved from audio and, and nus for udjusting the telescope vcrtlcnll and lutcrnllynt its rumend.

1",. The combination with n telescope. of n front nud rear, mouutlnntherefor. th latter lmvlngn inn-u bearing surface convexod from from toroar :md (Ulltll'l'll from end to end, and menus for adjustin thlcll-scullc vorticully and laterally at its rcnr uml.

4. The combination with :1 lo] udlnullv mornblo lclcscope. of :1mounting therefor. and :1 swivclln: lflhll'lml shoe lo -atcd in themountln and having :1 bcuring sul'l'ucc cqnvcxcd from front to run! mu!cuucnvcd l'rom cm] to end.

5. he comblnuilou with u longitudinally nlovublc tr-lw scope, of ainterzillv mljustublo nuulnliug tluu-cl'or. n than bered screw locatedin the top of the said mounting in which it is vertically udjustnblc, :1bearing sboc swivolcu in the sold screw and bruvidin; hearing for thelclcscopo and menus for yielrlingly holding the tclcscopc ngulust lhcsnld shoe.

ll. The combination with :2 longitudinally movnblc lclcscope. of alut'erully adjustable mounting therefor. n lIt;ll inc shoe locatedwithin the said mounting; and constituting a bearing for the telescope,a c luubcrcd micrometer screw for the reception of the said b: u shunand lhc vcrtlcul adjustment lbcrcol' and mcuns lUl' ylcldiugly pressingthe telescope against the sold slum.

7. The combiim'lion 1th a lonuitr mlly movable lclc scope. of n mountingtbcrofor. on adjusting screw curried by thc said mounting. :llKl nbent-lug Siloc mouulcd in the said scrcv; and providcd will! :1centering bovcl concliu; with :1 corresponding bevel in rho cud ol thescrew.

H. The combination with l(ll'l;.,'il.ll(ll!l;lll movable lclc' scope. ofu mounting therefor. :1 bearing for lhc tclcscopc, and u \rnusvcrsclyurrungcd cradle-like \virc spring to ,vicldincLv lift the tclcsropencninsl the sziid bout-lug.

I..lhc comblnnllon with u lclcscopc mounting. of n spring having itsends lncllucd rmuwm'ri niul lnwurd for culruucc inlo correspondinglyinclined bolcs in the sold mounting. whereby tho spring is retained inplace.

lo. 'll .c combination with :1 longitudinal]; movable told scopc. of alnterully adjustable renr m unting therefor pro vidcd at its lowcr andwith u lulcrnll) urrnncctl dovolull rib formed in one ol" its bcvelcdfzlt' r: ulth sbnllow recess. a base adapted to be secured to a gunbarrel nnd l'ormcd \vllll n don-lull groove for the ieccplinn ofthrszlld rib, and u loingjtiulinnlly bowed spring locnlctl in the saldre ccss and conctlng' .itb one of the bevcled walls of the said busci'or tuklng' up slack nod wear.

11. The combination with n longitudinally movable telescope, of a rearmounting therefor, u micrometer screw llll arm-295 i i carried by timesaid mounting and vertically adjustable therein, a teiescope'bearingcarried by the said screw and partaking of tile vertical adjustmentthereof, a base adapted to be secured to the gun barrel and carrying thesaid rear mounting, and a micrometer screw coacting with the said rearmounting nd base for the lateral or windnge adjustment of the telescope.

12. The combination with a longitudinally movable telescope,fof amounting therefor, 21 hearing for the telescope,. and a transverselyarranged wire spring comprising two retaining arms, and a cross memberthe telescope rests.

the presence of two nubscribing or reaeh upon which v 13. Thecombination with a telescope, of front and rear mountings thereforprovided with fixed bearing surfaces convexed from front to rear andconeuved from end to end, and menus or adjusting the-telescopevertically and late ally at its rear end.

In testimony whereof, I have signed this nnmlfimrion in witnesses.

JTHOMAs Q. v Witnesses .Fnnnnnw C! EABLn,

WEED-

